Re: How to populate Battery information through ACPI tables

From: Westerberg, Mika
Date: Tue Feb 19 2013 - 14:16:10 EST

On Tue, Feb 19, 2013 at 08:59:29PM +0200, Pallala, Ramakrishna wrote:
> > > Mika, I want to populate this characterization data as device
> > > specific/custom data which could be anything And may not be entirely
> > > related to battery. Is this is possible?
> >
> > Yes, for example you could have a custom ACPI method with your device which
> > then returns this information.
> >
> > See for example chapter from the ACPI spec. It describes _BIF method
> > that returns some battery data to the caller.
> Mika, _BIF method returns battery data/struct which is defined Table. 10-233.

Yes, it was just an example. You can have your own custom method for that,
lets say:


that then returns whatever you need.

> If I want to pass some device specific data seems like I can use
> _DSM(9.14.1) method and pass custom /device specific data to the driver.

_DSM is also an option, yes.

> And I believe this data format can be anything and private to the device?
> Can you confirm?

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